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SECTION 4 − OPERATOR CONTROLS
4-1. SPOT-CONTINUOUS SWITCH (Figure 3-1)
The SPOT-CONTINUOUS switch provides selection of
either a continuous weld or a timed weld operation.
Placing the SPOT-CONTINUOUS switch in the SPOT
position provides weld current for the time period set by
TIME RANGE switch and SPOT TIME control. The
SPOT TIME control begins to time out when the gun trig-
ger is closed.
Placing the SPOT-CONTINUOUS switch in the CON-
TINUOUS position provides weld current for as long as
the gun trigger is closed.
4-2. TIME RANGE SWITCH (Figure 3-1)
The TIME RANGE switch provides selection of the spot
weld time range. Placing the TIME RANGE switch in the
.2 to 2.5 SEC position provides .2 to 2.5 seconds of weld
time. Placing the TIME RANGE switch in the 2.5 to 5
SEC position provides 2.5 to 5 seconds of weld time.
4-3. SPOT TIME CONTROL (Figure 3-1)
The SPOT TIME control provides selection of spot weld
time within the time range selected. The scale surround-
ing the SPOT TIME control is calibrated in seconds and
provides a direct reading of spot time when the TIME
RANGE switch is in the .2 to 2.5 SEC position. Double
the scale to read spot time when the TIMER RANGE
switch is in the 2.5 to 5 SEC position.
Rotating SPOT TIME control clockwise increases spot
weld time.
4-4. BURNBACK TIME CONTROL (Figure 3-1)
The BURNBACK TIME control provides selection of the
time that weld current is present on the electrode wire
after wire has stopped feeding. By keeping weld current
present on the electrode wire, the wire burns away from
the workpiece and toward the contact tip.
If electrode wire sticks to workpiece, the BURNBACK
TIME control setting should be increased.
If electrode wire burns back into contact tip, the BURN-
BACK TIME control setting should be decreased.
The scale surrounding the BURNBACK TIME control is
calibrated in seconds. Burnback time ranges from 0
through .25 seconds.
SECTION 5 − SEQUENCE OF OPERATION
WARNING: ELECTRIC SHOCK can kill;
MOVING PARTS can cause serious injury;
IMPROPER AIRFLOW AND EXPOSURE TO
ENVIRONMENT can damage internal parts.
• Do not touch live electrical parts
• Keep all covers and panels in place while op-
erating.
Warranty is void if this control or the welding
power source is operated with any portion of the
outer enclosure removed.
ARC RAYS, SPARKS, AND HOT SURFACES
can burn eyes and skin; NOISE can damage
hearing.
• Wear correct eye, ear, and body protection.
FUMES AND GASES can seriously harm
your health.
• Keep your head out of the fumes.
• Ventilate to keep from breathing fumes and
gases.
• If ventilation is inadequate, use approved
breathing device.
WELDING WIRE can cause puncture
wounds.
• Do not point gun toward any part of the body,
any conductive surface, or other personnel.
HOT METAL, SPATTER, AND SLAG can
cause fire and burns.
• Watch for fire.
• Keep a fire extinguisher nearby, and know
how to use it.
• Do not use near flammable material.
• Allow work and equipment to cool before han-
dling.
MAGNETIC FIELDS FROM HIGH CURRENTS
can affect pacemaker operation.
• Wearers should consult their doctor before
going near arc welding, gouging, or spot
welding operations.
See Arc Welding Safety Precautions in welding
power source Owner’s Manual for basic welding
safety information.
5-1. GAS METAL ARC WELDING (GMAW)
WARNING: Read and follow safety informa-
tion at beginning of entire Section 5 before
proceeding.
1. Install and prepare welding power source accord-
ing to its Owner’s Manual.
2. Install Spot Control as instructed in Section 3.
3. Install and prepare wire feeder according to its
Owner’s Manual.